Update flake.lock

[erooke]

Automated changes by the update-flake-lock GitHub Action.

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/442d407992384ed9c0e6d352de75b69079904e4e' (2024-02-09)
  → 'github:nixos/nixpkgs/20bc93ca7b2158ebc99b8cef987a2173a81cde35' (2024-03-23)

Running GitHub Actions on this PR

GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action.

To run GitHub Actions workflows on this PR, run:

git branch -D update_flake_lock_action
git fetch origin
git checkout update_flake_lock_action
git commit --amend --no-edit
git push origin update_flake_lock_action --force

[erooke]

Manually fixed the style issues + bumped deps in #15